The claimed '57 manifold on e-Bay appears to be very similar to the '55-'56 intake manifold with the exception that the little oval plate with two bolts is just a cast boss on the '55-'56. That boss may be the base for an a/c compressor? The casting number on the bottom of the '55-'56 manifold is 1634285 and should not be mistaken for a part number. The parts book shows part number 1731686 for the '55-'56 300 intake (a rather high number for a 1955 part) and 1733477 for the '57-'58 (non-FI) 300 intake manifold. Perhaps someone can furnish a casting number for the '57-'58 manifold so that you can verify it with the e-Bayer. I think I have read that the '55-'56 manifolds are not interchangeable with the '57-'58 manifolds due to differences in the dimensions between the 392 heads and the earlier 331/354 heads. FYI, the little rectangular depression on the passenger's side of the manifold is a platform for a stamped steel coil bracket that is fastened to the adjacent bolts. There is a threaded boss with something in it in the e-Bay manifold. On my 1955, there is a fitting in that boss that provides access for a vacuum line to the power brake booster. I have a spare manifold that came with a temperature probe in that hole, giving rise to the question that these could be marine manifolds? C-300'ly, Rich Barber Brentwood, CA 1955 Chrysler C-300 -----Original Message----- From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Paul Holmgren Sent: Tuesday, June 30, 2009 10:47 AM To: Chrysler300@xxxxxxxxxxxxxxx Subject: [Chrysler300] 57 Intake question Does ANYone with a 57 300 have an intake that looks like this one?? http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=110408938060 -- Paul Holmgren Mine: 2 57 300-C's in Indy Hers: 05 PT GT R/T HO Hoosier Corps L#6 ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! Groups Links ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: mailto:Chrysler300-digest@xxxxxxxxxxxxxxx mailto:Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/